jubilee
particular anniversary; in the Bible, the fiftieth
platinum jubilee
event to mark the 70th anniversary of a monarch's accession
Platinum Jubilee of Elizabeth II
70th anniversary of the accession of Queen Elizabeth II
Diamond Jubilee of Elizabeth II
60th Anniversary of the accession of Queen Elizabeth II
golden jubilee
50th anniversary
Silver Jubilee of Queen Elizabeth II
25th anniversary of the accession of Queen Elizabeth II
Canadian Centennial
100th anniversary of the Canadian Confederation in 1967
Sapphire Jubilee of Elizabeth II
65th Anniversary of the Accession of Queen Elizabeth II
Ruby Jubilee of Elizabeth II
40th Anniversary of the Accession of Queen Elizabeth II
diamond jubilee
60th anniversary
silver jubilee
25th anniversary
Millennium of the Polish State
Polish celebrations (1960–1966)
ruby jubilee
40th anniversary
sapphire jubilee
65th anniversary of a ruler's reign